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The Treadmill Fatigue Test: A Simple, High-throughput Assay of Fatigue-like Behavior for the Mouse

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Published on: May 31, 2016

Comparative Physiology of Fatigue.

James H Jones¹

¹Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA.

Medicine and Science in Sports and Exercise

|May 17, 2016

Summary

This review explores factors influencing animal fatigue, focusing on how body temperature and mass impact endurance. It examines extreme animal performances to understand physiological principles governing sustained activity.

Area of Science:

Comparative Physiology
Animal Physiology
Exercise Physiology

Background:

Fatigue limits sustained performance in both humans and animals.
Understanding fatigue is crucial for fields ranging from sports science to wildlife biology.

Purpose of the Study:

To provide insights into factors associated with fatigue in animals.
To examine the reciprocal relationship between physiological factors and endurance.
To evaluate extreme animal performances to understand physiological principles.

Main Methods:

Comparative physiology approaches: identifying invariant principles and evaluating extreme adaptations.
Analyzing factors affecting endurance time, specifically body temperature and body mass.
Discussing examples of extreme animal performance: bird migration, marine mammal diving, and kangaroo locomotion.

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Main Results:

Body temperature influences endurance via thermodynamic effects on metabolic rates.
Body mass affects endurance through allometric scaling principles.
Extreme animal adaptations offer insights into the physiological limits of sustained performance.

Conclusions:

Body temperature and mass are key determinants of animal endurance.
Comparative physiology provides a framework for understanding fatigue across diverse species.
Studying extreme performances illuminates fundamental physiological constraints on locomotion and sustained activity.